People walk in Tree Library park in Milan, Italy, in December. The city has ambitious plans to plant three million new trees by 203. Photo: AP

Best way to fight climate change? Plant a trillion trees

  • Over decades, such a move would help suck up nearly 750 billion tonnes of heat-trapping carbon dioxide from atmosphere, Swiss scientists say
  • Study shows that even with existing cities and farmland, there’s enough space for new trees
Topic |   Climate change

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People walk in Tree Library park in Milan, Italy, in December. The city has ambitious plans to plant three million new trees by 203. Photo: AP
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